Thats nice to read......about not wanting parents to buy cars
for your own convenience in Perth.
My dear....everywhere is dangerous.
If you are not certain about the trains, move in groups of
friends/classmates & be home a sensible time.
You can also get to know your room mates better and share a
vehicle when you get the licence.
Except for in Singapore, you shouldnt be rollablading, walking
or cycling alone.
If its just for transporting you one person, I would suggest a
motorcycle & licence but you dont have to follow my
suggestion.